- Yenidoğan: 0,4–0,8 mg/dL (35–71 μmol/L)
- 2–12 ay: 0,2–0,4 mg/dL (18–35 μmol/L)
- 1–3 yıl: 0,3–0,5 mg/dL (27–44 μmol/L)
- 4–6 yaş: 0,4–0,6 mg/dL (35–53 μmol/L)
- 7–9 yaş: 0,5–0,7 mg/dL (44–62 μmol/L)
- 10–12 yaş: 0,6–0,8 mg/dL (53–71 μmol/L)